Enum CommunicationError

#[non_exhaustive]
pub enum CommunicationError {
    DerefErr {
        offset: u32,
        msg: String,
    },
    InvalidOrder {
        value: i32,
    },
    InvalidRegion {
        source: RegionValidationError,
    },
    InvalidSection {
        msg: String,
    },
    InvalidUtf8 {
        msg: String,
    },
    RegionLengthTooBig {
        length: usize,
        max_length: usize,
    },
    RegionTooSmall {
        size: usize,
        required: usize,
    },
    RegionAccessErr {
        region: Region,
        memory_size: usize,
    },
    ZeroAddress {},
}

An error in the communication between contract and host. Those happen around imports and exports.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

DerefErr

Fields

offset: u32

the position in a Wasm linear memory

msg: String

InvalidOrder

Fields

value: i32

InvalidRegion

Fields

source: RegionValidationError

InvalidSection

When the contract supplies invalid section data to the host. See also decode_sections [crate::sections::decode_sections].

Fields

msg: String

InvalidUtf8

Whenever UTF-8 bytes cannot be decoded into a unicode string, e.g. in String::from_utf8 or str::from_utf8.

Fields

msg: String

RegionLengthTooBig

Fields

length: usize

max_length: usize

RegionTooSmall

Fields

size: usize

required: usize

RegionAccessErr

Fields

region: Region

memory_size: usize

Current size of the linear memory in bytes

ZeroAddress

Trait Implementations

impl Debug for CommunicationError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for CommunicationError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for CommunicationError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<CommunicationError> for VmError

fn from(err: CommunicationError) -> Self

Converts to this type from the input type.

impl From<RegionValidationError> for CommunicationError

fn from(source: RegionValidationError) -> Self

Converts to this type from the input type.